Areas of Expertise

Designing the Future

“You can never look as far into the future as you can look back on experience.”
— Heinrich Oberressl

Based on our wealth of experience from the past decades, we are able to work on project challenges in a proactive manner – future-oriented and sustainable.

OK ZT-GmbH Area of Expertise
Building and Industrial Construction

Building and Industrial Construction

Our top priorities are high quality, timeliness and cost awareness. Thanks to our extensive know-how and our long-term experience, we are able to provide our customers with a comprehensive range of services.

Infrastructure and Residential Engineering

Infrastructure and Residential Engineering

We coordinate projects from an initial idea to realization in the fields of road, path and bridge construction, hydraulic engineering, as well as space design and the development of digital utilities – our experts are here to support you.

Structural Engineering

Structural Engineering

We offer comprehensive advice and support, thorough calculations and a high-quality plan execution. With OKZT, you can rely on a highly efficient coordination of your construction site, as well as maximum flexibility and timeliness.

Reliability, timeliness and the comprehensive bundling of our expertise make us a solid partner for your projects.

Civil Engineering, Infrastructure and Residential Engineering, as well as Structural Engineering form the three pillars of OKZT – way beyond the borders of Austria. Our main markets are Slovenia, Croatia and Czech Republic. Since 2018, we have taken the first steps across the Atlantic and to Asia.

The international orientation of OKZT is legally secured by official approvals in our main markets. Thus, we are able to submit to the relevant authorities.

Realized Projects



Let’s Build Together

Send us a message and our experts will take care of your request – from comprehensive consultancy to realizing your project!
OK Ziviltechniker GmbH
Feldmarschall-Conrad-Platz 11, A-9020 Klagenfurt am Wörthersee
+43 463 44 44 40